Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.121...21a&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 121, no. 1, April 1986, p. 21-44.
Astronomy and Astrophysics
Astrophysics
18
Distance, Supernova Remnants, Accuracy, Brightness, Calibrating, Magellanic Clouds, Spatial Distribution
Scientific paper
A new way of chossing the calibrators for constructing Sigma(D)-dependence of supernova remnants (SNR) is suggested. A knowledge of the distance of an SNR is not sufficient to consider it as a calibrator. It is shown that neither more accurate determination of distance to calibrators, nor an increase in their number, nor an increase in the precision of the remnant angular size and radio flux determination, can lead to a considerable improvement of simple Sigma(D)-dependence which is suggested in the given work. For remnants with small surface brightnesses there is no Sigma(D)-dependence at all. The most accurate remnant distances currently known, are given, and it is suggested that these will change only after a large amount of additional observational data accurately compiled.
Allakhverdiev A. O.
Guseinov Oktay H.
Iusifov I. M.
Kasumov F. K.
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